A random sample of 37 second graders who participated in sports had manual dexterity
Chapter 10, Problem 10.42(choose chapter or problem)
A random sample of 37 second graders who participated in sports had manual dexterity scores with mean 32.19 and standard deviation 4.34. An independent sample of 37 second graders who did not participate in sports had manual dexterity scores with mean 31.68 and standard deviation 4.56. a Test to see whether sufficient evidence exists to indicate that second graders who participate in sports have a higher mean dexterity score. Use = .05. b For the rejection region used in part (a), calculate when 1 2 = 3.
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